老衰
Common
Noun
Irregular
Intransitive
Noun
1
noun (common) (futsuumeishi)noun or participle which takes the aux. verb suruintransitive verbnouns which may take the genitive case particle 'no'
senility;senile decay;infirmity (through age)
彼は老衰で二年前に亡くなった。
He died of old age two years ago.